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Structural Steel. Tutor to Guide British Standard to US J Jayanthi Chandran.
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Bolt Standards-8. www.lemarx-jsw.com. Jayanthi steel : FB.
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Bolt pitch standards-9. www. lemarx-jsw.com. Bolt Size in Bolt Size in Inches Hole size in MM Hole size in Inches Metric M6 ¼ 8 3/16 M8 1/3 10 3/16 M10 3/8 12 7/16 M12 ½ 14 9/16 M16 5/8 18 11/16 M20 ¾ 22 13/16 M22 7/8 24 15/16 M24 1 26 1-1/16 M27 1-1/8 29 1- 3/16 M30 1- ¼ 33 M33 1- 3/8 36 M36 1- ½ 39 M42 1-3/4 45 M48 2 51 In metric hole dia = Bolt dia + 2mm more than 30 +3mm In imperial it is bolt dia+1/16” for over size bolt dia + 1/8”.
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BOLT connection details-10. Bolt Pitch Standard.
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Bolt Pitch Standards-11. Edge & End distance ( Given sheared edge) -- Bolt Size in Bolt Size in Inches Edge END PITCH GAUGE Metric M6 ¼ M8 1/3 M10 3/8 20 20 (7/8) 25 20 M12 ½ 20 ( 7/8 ) 24(1-1/8) 30 30 M16 5/8 25 (28 US-M) (1 1/8) 35 40 35 M20 ¾ 30 (34 US-M)(1 ¼) 40(1-1/2) 50 40 M22 7/8 40 (38 US –M) (1 ½) 45 (2) M24 1 40 (42 US-M) (1 ¾) 50 (2 -1/4) M27 1-1/8 45 (48 US-M) (2) 55 M30 1- ¼ 50 (52 US-M) (2 ¼) 60 M33 1- 3/8 M36 1- ½ M42 1-3/4 M48 2.
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BolT Assemblies- us-12. Grip length. Nominal bolt size inches Grip length ½ 11/16 5/8 7/8 ¾ 1 7/8 1 -1/8 1 1-1/4 1 1/8 1 -1/2 1 ¼ 1-5/8 1 3/8 1-3/4 1 ½ 1-7/5.
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Socket & wrench sizes-13. For Spanner size M16 1.5d+1mm above M16 1.5 d.
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Connection clearences -14. clearence. Bolt clearance.